On 12 Aug 2000, Ulrich Drepper wrote:
>
> Ever since the %gs handling was fixed in the 2.3.99 series the
> appended test program worked. Now with 2.4.0-test6 it's not working
> again. Looking briefly over the patch from test5 to test6 I haven't
> seen an immediate candidate for the breakage. It could be missing
> propagation of the LDT to the new process (and therefore an invalid
> segment descriptor) or simply clearing %gs.
Indeed - the fork() re-oranization ended up clearing the segments _after_
having copied them.
In kernel/fork.c, move the "copy_segments()" call from before the
dup_mmap() _into_ the dup_mmap() instead of the line "current->segments =
NULL", and it should be ok.
Thanks,
Linus
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